Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ikami Yuji and Murata Kohji and Matsumura Yukari,Influence of External Log Quality on the Presence of Knots on Sawn Faces in Sawing Medium Diameter Sugi Logs,Mokuzai Gakkaishi,00214795,The Japan Wood Research Society,2007,53,4,206-213,https://cir.nii.ac.jp/crid/1390282681328916608,https://doi.org/10.2488/jwrs.53.206